SYMPOSIA PAPER Published: 01 January 1994

Spectrum Fatigue Testing Using Dedicated Software


A series of modular spectrum fatigue test control and data collection programs have been developed. Specially tailored modifications of the software are used for different types of tests. Simulated service spectra with predetermined amplitudes and frequencies for one or more control channels can be produced. Simultaneous monitoring of the test machine and specimen response permits run-time analysis of the actual spectrum, measuring of fatigue crack initiation or growth, and speed optimization. The full-scale testing of a locomotive bogie employing eight hydraulic actuators is described. The three-million kilometre service simulation verified the fatigue resistance of the structure. The importance of meaningful run-time analysis is emphasized.

Author Information

Marquis, G
Technical Research Centre of Finland (VTT) Manufacturing Technology, Finland
Solin, J
Technical Research Centre of Finland (VTT) Manufacturing Technology, Finland
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Developed by Committee: E08
Pages: 241–256
DOI: 10.1520/STP13952S
ISBN-EB: 978-0-8031-5283-0
ISBN-13: 978-0-8031-1985-7